I assume you're free ranging them.

That's how it goes if that's the choice you make.

If you protect them with a chicken tractor of sorts, they could graze an area, protected, and then you could move the tractor so they graze a new area, still protected.

It's not free range but as you can see, freedom is dangerous, making compromise with the chickens' freedom may be wise. In the cost/benefit analysis, what is the benefit of free range vs tractoring? We know the cost is getting your birds picked off by my fellow hawks.